Derivatives And Hedging Activities (Impact Of Derivative Instruments In Consolidated Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 9		$ 6
Derivative Liabilities	35		68
Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	5		0
Derivative Liabilities	28		63
Undesignated [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	4		6
Derivative Liabilities	7		5
Undesignated [Member] | Embedded Derivatives [Member]
Derivatives, Fair Value [Line Items]
Embedded derivative assets	4	[1]	5	[2]
Embedded derivative liabilities	0		0
Undesignated [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0		1	[1]
Derivative Liabilities	0		0
Undesignated [Member] | Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Derivative Liabilities	4	[3]	5	[4]
Undesignated [Member] | Electricity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Derivative Liabilities	3	[3]	0
Cash Flow Hedging [Member] | Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	5	[1]	0
Derivative Liabilities	24	[5]	53	[6]
Cash Flow Hedging [Member] | Other Liabilities [Member] | Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities			21
Cash Flow Hedging [Member] | Other Liabilities [Member] | Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	8
Cash Flow Hedging [Member] | Other Accrued Liabilities [Member] | Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities			32
Cash Flow Hedging [Member] | Other Accrued Liabilities [Member] | Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	16
Fuel Oil Contracts [Member] | Cash Flow Hedging [Member] | Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Derivative Liabilities	$ 4	[3]	$ 10	[3]

[1] Included in Other current assets in the accompanying consolidated balance sheet.

[2] Included in Deferred charges and other assets in the accompanying consolidated balance sheet.

[3] Included in Other accrued liabilities in the accompanying consolidated balance sheet.

[4] Included in Other liabilities in the accompanying consolidated balance sheet.

[5] Includes $16 million recorded in Other accrued liabilities and $8 million recorded in Other liabilities in the accompanying consolidated balance sheet.

[6] Includes $32 million recorded in Other accrued liabilities and $21 million recorded in Other liabilities in the accompanying consolidated balance sheet.